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#Question id: 19775
#XL - P Chemistry
Which experimental observation correctly account for the phenomenon?
Experimental observation Phenomenon
(A) X-rays spectra Charge on nucleus
(B) alpha -particle scattering Quantized electron orbit .
(C) Photoelectric effect The nuclear atom
(D) Emission spectra Quantization of energy.
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#Question id: 17673
#XL - R Botany
transport of water, minerals, and nutrients
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#Question id: 19678
#XL - P Chemistry
Which of the following is the IUPAC name of the chemical in which an ethyl group replaces one hydrogen of ammonia?
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#Question id: 5737
#XL - R Botany
When an organism gains one extra copy of a chromosome but not a complete haploid set, the conditions is known as
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#Question id: 1620
#XL - S Microbiology
Natural killer (NK) cells do NOT: